Brake-band support



Sept. 2 1924. 1,507,438

G. L. SMITH v BRAKE BAND SUPPORT Filed Jan. 51 1924 Shun/mm Glldmz'z h,

Patented Sept. 2, 1924.

UNITED s TAT-" S GEORGE L. SMITH, or 'IWKSHING'DON, DISTRICT or contnue, liss'ienont'ro mime STATES ORDNANGE GOMPAN'Y,{OF wAsmncToN,msrmcm-ereonumnm, .111 com romTron o'r VIRGINIA.

BRAKE-3mm gsur ronsTQ I -Application medJanu'ary 31,19'24. *ser'iaiito.889,743.

.Tgrall whmnit'ma'y concern: l j

Be it knownth'at I, GEORGE L. 'SM-1TH,ja citizen of "theUnit'ed,;States, and resident of Washington, in the District ofColumbia, have invented certain new and useful Improvements inBrake-Band Supports, of which the following is a specification.

The object of myinventio-n i's to provide adequate means for the supportof the brake 'band of an automobile andjthe mechanism carried bythe free-endsthereof for applying the brake pressure While atthe same timepermitting rotation of the band and its associated mechanism for thepurposes of equalization of the braking effect as fully described andclaimed in my Letters Patent 1,440,842. i

In the drawings chosento illustrate my invention the scope whereofis:setfforth in the claims,

Figure 11 shows a-side view of a brake structure embodying my invention;and

Figure 2, a front view of same. I

Referring ,now to the drawings in detail 10 designates-the brake band,11 the lugriveted to the lower end of the band 10 and V carrying a pivot12 to which the brake lever 13 is pivoted all in the usual manner: of,construction. 14 designates a "lug secured to the upper end of the band10 for; the reception of a bolt 15 having atrits lower end a clevis 16which is pivoted to the leverl3 as at-17.

A bracket 18 issecured to afixed part of the axle and carriesanfL-shaped support QOha-ving a vertical stem21 slidablyvmounte'd inbearings 22 and 23 in the bracket 18. ;A shoulder 24 limits the downwardvmovement of=this support 20 and its upward --movement is resisted by aspring 25.Which abuts' against the bearing 22 at itsupper end andagainst a washer 26 at itslower end, this washer being secured to thestem 2'1 by a cotter pin 27.

:The h'orizont'al' arm .28 of the support '20 terminates in an eye 29through whichthe bolt 15 passes and this eye is utilized in a mannersimilar to the usual fixed eye provided for the support of the partsunder consideration, as follows.

A spring 30 carried on the bolt 15 is sup ported at its lower end by theeye 29 and presses against the lug 14 at its upper end;-

7 The adjusting "nuts 31 carrietl xb'y the r bolt '15 bear against theunder 'side o'f thee e "29 and arehe-ld in contact 'therewithf'by eaction ottheispring 30 on the-lug 14 which in "turn supports the nut"32' ion the bdltid' Adjustmentof the *band :10 'is 'madie in the' usualmanner by ;proper "setting of the'fi'iuts 31 and the band adjusting'nut""32 isince tightening of the nut draws thefl rpper half of the band:10 fdown into closer" p'roximity' to thebrake 'dru-m :33 and lowering:of the nuts 31 on the bdlt 715 allowstlie lower half of the "band tobelike manner byth action p f'fh m g 1 thus n at my mechani'smdoe's'notchange in any waythe conventional method off brake"band adjustment ingeneral use.-

The mechanism operates as follows:

Should thefband be rotated in the direction 5 and the spring 30 would becon pres'sed,

since its lower end abuts against the eye 29.

Should theb'an d beprotatedinthe opposite the band 10 can rotate ineither direction and that such rota'tionwill compress either thespringor spring' 25 asthe casemaybe ,port 20 to move upward "therebycompress 'ingthe spring 25. 'It isfthus-evidentgtliat and that whentheforce"causing such irota 'tion is released, these springs will'return the band toits initial position. 'Itris "also evident that thesupport 20 will fdllow slightx lateral displacements of "the bolt' 15,

sinceit can turnf free'ly on'its stem21fand" that it provides anon-resisting support for the lower end-of the springBOjwh'ereby up anddown movementiof"theband due to visprings 25 and '30.

It will be observed that the previously de scribed construction isparticularly designed for association in a brake system embodying mybraking effect equalizing mechanism 'brations and road shocks cannottake jplaoe without overcoming the [forces of'ithe tjwo' asset forth inmy prior Patent 1,440,842

and wherein the brake bands are adapted.

to rotate with their respective drums subject to the limitations imposedby the mechanism. I have herein shown a fragment of such braking effectequalizing mechanism as embodying a bell crank 84 which is pivoted atseparated points to the brake band and a bracket 35which extends-fromand is'fixed to the axle casing (not shown) of an automobile, wherebythe band 10, under certain conditions, is capable of limited rotationwith the drum 33, all as fully de-" 10 scribed and claimed in myaforesaid patent.

I claim 1. In a brake structure, a brake band adaptable for rotarymovement in either direction, a toggle mechanism for contracting l5theband, and means for yieldingly resisting rotary movement of the, band ineither direction, said means including spring elements mounted on andindependently of the togglemechanism respectively.

20. ..2..In, a brake structure, brake band adapted for rotary movementin either direction, a toggle mechanism for contracting .the. band, aspring mounted on said mecha nism normally expanding the band, a sup- 2porting member with which said spring coacts to yieldingly resistrotation of the band in one direction, said supporting member be ing,movable with said toggle mechanism upon rotation of the band in theopposite direction, and means mounted independently adapted for .1offthe toggle mechanism operating to yieldingly resist said movement ofthe supporting T member. I

w 3. In a brake structure, a brake band rotary movement in either di-,rect ion, a toggle mechanism for contracting the band, a springincluded in said mechanism normally expanding the band, asupportingmember immovably coacting. with 40 the spring to effect yieldingresistance to rotation of the band; in one direction and movablewithsaid toggle mechanism upon rota tion of the bandin the oppositedirection, and means mounted independently of the -4 toggle mechanismoperating to yieldingly resist said movement of the supporting member.Inna brake structure, a brake band adaptedffor rotary movement in eitherdirection, a toggle mechanism for operating the band including a springto normally expand the band, a supporting member having one movementfrom an initial position and .forming a. rigid abutment when in saidini- 5 tial position from which said spring reacts to yieldingly resistrotation of the band inv one direction, means operated by oppositerotation of the band to move said member movement of the band in onedirection, said member being movable from said initialpo- I sition byrotary movement of the band in the opposite direction, and a secondspring yieldingly resisting movement of the supporting member from itsinitial position.

6. In a brake structure, a brake band adapted for rotary movement ineither direction, a member movable from an initial position by rotationof the band in one direction, and a pair of springs one of which reactsfrom the member to yieldingly resist rotation of the band in theopposite direction and the other operatin to yieldingly" resist movementof the member from its initial position.

7. In a brake mechanism, a brake band, a toggle mechanism forcontracting the band, a supporting member movable in one ,direction onlyfrom an initial position, a band expanding spring on said togglemechanism supported by said member, a stop on said toggle mechanismengaging said supporting member and limiting expansion of said bandunder the action of said spring, and asecond spring resisting movementof said supporting member from its initial position.

8. In a brake structure, a brake band adapted for rotationv in eitherdirectiom-a 9 toggle mechanism for contracting the'band and including abrake lever and abolt connecting the lever with one end of-the band, astop on said bolt, a release spring" on the bolt between the stop andband, a bracket,

a supporting member slidably engaged in said bracket and having one endslidably engaged with the bolt between the stop and release spring tosupport the latter, and

means between the bracket and supporting member yieldingly holding thelatter against movement inone direction.

In testimony whereof I hereunto affix my signature.

GEORGE L. SMITH.

